Design process of an engineering structure is an iterative modification process.

工程结构的设计过程是一个反复修改的迭代过程。

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Review of the results will be performed by a Design engineer and decisions regarding modification to standard load group loadings will be determined by the PSG Engineering Director.

设计工程师负责对分析结果进行评审。按照标准载荷组载荷要求，对载荷进行调整的相关事宜，由管架集团工程总监作出最终决定。

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Adoption of second version of generalized design of small scale urea plant issued by China Wuhuan chemical engineering Corp. in Ninyang fertilizer plant and minor modification on it are introduced.

简述宁阳化肥厂采用中国五环化学工程公司编制的小尿素二版通用设计，并在此基础上进行小改小革的成功经验。

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The national laboratories develop and certify an engineering design for warhead modification through a combination of nonnuclear experiments, flight tests, physics and engineering analyses, and computer simulations.

CENTERFORSECURITYPOLICY: US Nuclear Stockpile